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Finding the Fourth Proportional to 330,763.20, 456,415.20 and 187,494.72

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Solution

The fourth proportional to 330,763.20, 456,415.20 and 187,494.72 is: 258,721.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,763.20 : 456,415.20 = 187,494.72 : x
  2. Step 2: Convert to fraction form
    330,763.20/456,415.20 = 187,494.72/x
  3. Step 3: Cross multiply
    330,763.20x = 456,415.20 × 187,494.72
  4. Step 4: Simplify right side
    330,763.20x = 85,575,440,127.74
  5. Step 5: Solve for x
    x = 85,575,440,127.74/330,763.20
  6. Step 6: Final answer
    x = 258,721.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.